RFR: 8298385: Some font classes rely on blind casting to implement Object.equals()

[Sergey Bylokhov]

On Sun, 25 Sep 2022 04:01:26 GMT, SWinxy <duke at openjdk.org> wrote:

> Some also had two separate methods to check equality, one calling the other. Objects.equals() is used in some places as a replacement for a local copy of the function. In the end, the equals methods become quicker to understand their checks, more condensed, and becomes more in line with other equality methods in the JDK.

You can restart the presubmit tests by merging from master to make it green.

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PR: https://git.openjdk.org/jdk/pull/10416